Depth Offset (Advanced); Temp. Offset (Advanced, With Temp/Speed Only); Speed Calibration (Advanced, With Temp/Speed Only); Local Time Zone (Advanced) - Humminbird 598ci Operation Manual

NOTE: The availability of the digital readout information corresponds with the
view selected, the accessory attached, and whether or not you are navigating.
Depth Offset will adjust the digital depth readout to indicate depth from the
waterline or boat's keel. Enter a positive vertical measurement from the
transducer to the waterline to read the depth from the waterline. Enter a negative
vertical measurement from the transducer to keel to read the depth from the keel.
Temp. Offset will adjust the temperature readout by the amount entered. This
menu option is available if a Temp/Speed Accessory is connected and the
paddlewheel has moved at least once.
Speed Calibration will adjust the speed readout by the amount entered. This
menu option is available if a Temp/Speed Accessory is connected and the
paddlewheel has moved at least once.
Local Time Zone selects your time zone in reference to the time reported by the
GPS receiver when Time + Date is selected as a Digital Readout on the Sonar
View (see Setup Menu Tab: Select Readouts).
Setup Menu Tab
Depth Offset
(Advanced)
Settings: -10.0 to +10.0 feet, or -3.0 to +3.0 meters
(International Models only); Default = 0
Temp. Offset
(Advanced, with Temp/Speed only)
Settings: -10.0 to +10.0 degrees; Default = 0
Speed Calibration
(Advanced, with Temp/Speed only)
Settings: -20% to +20%, Default = 0%
Local Time Zone
(Advanced)
Settings: Various, Default = EST [UTC-5] - Eastern
Standard Time
160